FDA moves to ban trans fats, citing health risks

Friday

Nov 8, 2013 at 12:01 AMNov 8, 2013 at 1:16 PM

The Food and Drug Administration proposed measures yesterday that would all but eliminate artificial trans fats, the artery-clogging substance that is a major contributor to heart disease in the United States, from the food supply.

The Food and Drug Administration proposed measures yesterday that would all but eliminate artificial trans fats, the artery-clogging substance that is a major contributor to heart disease in the United States, from the food supply.

Under the proposal, which is open for public comment for 60 days, the agency would declare that partially hydrogenated oils, the source of trans fats, were no longer "generally recognized as safe," a legal category that permits the use of salt and caffeine, for example.

That means companies would have to prove scientifically that partially hydrogenated oils are safe to eat, a high hurdle given that scientific literature usually shows the contrary. The Institute of Medicine has concluded that there is no safe level for consumption of artificial trans fats.

Dr. Margaret A. Hamburg, the agency's commissioner, said the rules could prevent 20,000 heart attacks and 7,000 deaths from heart disease each year.

The move concluded three decades of battles by public-health advocates against artificial trans fats, which occur when liquid oil is treated with hydrogen gas and made solid. The long-lasting fats became popular in frying and baking and in household items such as margarine, and were cheaper than animal fat, like butter.

But over the years, scientific evidence has shown that they are worse than any other fat for health because they raise the levels of so-called bad cholesterol and can lower the levels of good cholesterol.

In 2006, the agency put into effect a rule requiring that artificial trans fats be listed on food labels, a shift that prompted many large producers to eliminate them. A year earlier, New York City told restaurants to stop using artificial trans fats in cooking. Many major chains such as McDonalds found substitutes and eliminated trans fats.

Those actions led to major advances in public health: Trans-fat intake declined among Americans to about 1 gram a day in 2012, down from 4.6 grams in 2006. A report from the Centers for Disease Control and Prevention found that blood levels of trans fatty acids among white adults in the United States declined by 58 percent from 2000 to 2009.

But the fats still lurk in many popular processed foods, such as microwave popcorn, certain desserts, frozen pizzas, margarines and coffee creamers.

"The artery is still half clogged," said Dr. Thomas R. Frieden, the director of the CDC. "This is about preventing people from being exposed to a harmful chemical that most of the time they didn't even know was there."

He noted that artificial trans fats are required to be on the label only if there is more than half a gram per serving, a trace amount that can add up fast and lead to increased risk of heart attack. Even as little as two or three grams of trans fat a day can increase the health risk, scientists say.

"It's quite important," said Frieden, who led the charge against the fats in New York when he was health commissioner there. "It's going to save a huge amount in health-care costs and will mean fewer heart attacks."

Some trans fats occur naturally. The proposal only applies to those added to foods.

Public-health advocates applauded the measure.

"Most of it is gone, but what remains is still a serious problem," said Michael F. Jacobson, executive director of the Center for Science in the Public Interest.

"I suspect there are thousands of smaller restaurants that continue to use it out of ignorance," he said, adding that they ask: "'Trans what?' They just use whatever the supplier sends."

But public awareness can be powerful. This summer Jacobson's nonprofit group drew attention to the fact that the so-called Big Catch fried fish meal at Long John Silver's, which comes with fried hush puppies and fried potatoes, contained 33 grams of trans fat. The restaurant chain has since promised to eliminate trans fats by the end of the year.